Title:
NOISE ABSORBER FORMED OF COMPOSITE MAGNETIC MATERIAL
Document Type and Number:
Japanese Patent JP3431495
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a noise absorber formed of a composite magnetic material, with which electromagnetic disturbance noises covering MHz to GHz band can be suppressed and blocked.
SOLUTION: A pair of composite magnetic bodies 10 which are formed of composite magnetic materials made mainly of scale-like Si-Fe based metallic magnetic powder and have a shape of divided annular body are respectively provided to the right and left casing parts 21 of a plastic case 20 as a freely opening and closing holding member, and when the case 20 is closed, the pair constitutes a closed loop magnetic path. The pair may be made of ferrite in port, and it is preferably molded as a single body respectively together with the holding member.
Inventors:
Naoji Akino
Takashi Tanaka
Toshinori Sasaki
Yoshiaki Akachi
Takashi Tanaka
Toshinori Sasaki
Yoshiaki Akachi
Application Number:
JP9835898A
Publication Date:
July 28, 2003
Filing Date:
March 25, 1998
Export Citation:
Assignee:
TDK Co., Ltd.
International Classes:
H01F1/14; H01F1/34; H01F17/04; H05K9/00; (IPC1-7): H01F17/04; H01F1/14; H01F1/34; H05K9/00
Domestic Patent References:
| JP529152A | ||||
| JP7211532A | ||||
| JP7273485A | ||||
| JP11273924A | ||||
| JP11273925A |
Attorney, Agent or Firm:
Takashi Murai
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